Machine for making knife blades



yMarch 30 1926.

5 Sheets-Sheet 1 v "INVENTo awful BY ATTORNEY March 30 1926.

E. E. 4wool: vMACHINE FOR MAKING KNIFE BLADES' Fired July 25, 1921 5sheets-sheet Y VINVENTOR awa v6. BY

i'. ATTORNEY March 30,1926.

E. E. WOOD MACHINE Fox MAKING KNIFE 'BLADES 5 Sheets-Sheet 3 `Filed July25, 1921 INVENTOR March 30,1926 l EL EL VVCDCDE) MACHINE Fon MAKINGKAIFE BLADES Filed Julyv 25, 1921 Maid; so ,1926.

` v l1,578,790 IE. E. woop A l v .A MACHINE FOR MAKING KNIFE BLADESFiled July 2,5, 1921 5 Sheets-Sheetl 5 v ATTORNEY Patented Mar. 30,1926.

EDWARD E. Woon, or norwegen/Bron,

' wenn unirsi) 4.sterft-S PAT-ENT MASSAQHUSETTS, ASSIGNOR TRO lVlll/L A.

Boelens, nii/irren, OrTOROT'ICANADAyA coRoR'ATIN lor :oNTAnio MACHINEFOR :MAKING VKNIFE BLADES.

Application filed July 25,1921. VSerial No. 487,353.

methods and apparatus for making knifeA blades and the like 7whichinclude a handle 0i' tang.

One of the objects of v thehinyention isthe provision of a practicalmethod for fashinning -knife lblades accurately and expeditiousl;Y andlargely as a continuous operation.

Another object of the inyention is the provision otaneilicient method orrnashioning vknife blades accurately and expeditiously,

V,including a single vrolling operation which lengthens, WidensandcompressesV the metallic blank or stock and otherwise givescharacteristic and predetermined shape and size to theblade,v sothatb'vut a simple subsequent operation is required to place the bladein condition :for `polishing or silyeiji-ng Yas vmay be desired.

VAnother object ofthe invention isthe provision of a practical automaticapparatus for making lrnijfe blades and thelilie capable oiautomatically 4heat treating and swaging' the .blanks .from which :the.blades are made.

Another object of the 'invention is the proiision of va simple andveificient machine for feeding and rolling' blanks `into knife bladesrequiring but `one subsequent iashinning operation to produce `the,blade in condition for polishing.

Another object of the iiiiention is the provision .of a simpleiand.eliicient meenanisni for supplying se'aging rolls With heated blanksone afteranother and 'holding the blanks While being swaged.'

Another object of the `invention is the provision ci a machine for Vthe`purpose referred to7 of simple construction and readily accessible forconduct and View or operations. i

gripper operating mechanism; y

lingr rolls partly insee-tion;

Other objects Willibe in part obvious and in part pointed outhereinafter;

The invention accordingly consists ,in the several steps and therelation and i L 'oi one `or more of such steps .with rel- Lon Ito each@of the others thereof, which will be egempliiied in the hereinafterdisclosed method, and the scope of the application of `Which Will :beindicated iii the `claiiii's Athat follow.

' ln the accoii'ipanyiii` drawings forming part of thisspecification,"wherein similar reference characters `refer to Vsimilarparts tliroughout'the Seyer-al views,

chine for carrying out th'egreater portion of thev method and embodyingthe inve; Figl .is an end 'elevation of' l; Fig. 3 is a detail of "aportion ofthe li carrier with "a 'blank holder attachedg' F 4; is 'anend elevation ot a blank holder; l

5 is a .front View partly in ione-L section ojf a furnace employed themachine A ig, y( Iis a detail oi lthe gripper operating' mechanism;

yF 8 is an end View of a portion of the Fin". 9 is a rien'rofafpfor'ti'on of Fig, 5% `with `certain of the parts in :differentpositions from that illustrated in Fig;

'Fig lOis an en'dview of oneofthe sitas'- ingiolls partly in section; 'l

11], is al plan yiery'ofone of the swag-I "Figi "1 2, is a plan ,View

grippe-,ri its `guide and the mechanism .opening ,andI closingl thegripper;

entar plan .for .control a different `point-,on Fig. l2 from'Fig 13yand*illustratthe gripper and related parts in open position;

F l5 yisa-.ende elevation of the gifjper partly in section; f

' Fig. 16 represents a stock-blankl 'freni which -a blladeilskmade andVillust-ratingl lthe Figs. 17 and 18 represent the blank in two stagesconsequent on practicing the method.

, The furnace comprises a metallic boX-like Y chamber as indicated at 6(Fig. 6).

structure having side Walls 2 and end walls 3 and lined with fire brick4, Vthe fire brick on one side overhangmg the .combustion one side thefurnace is provided with a water-jacket and pipes 8 and 9 communicatewith the water jacket at opposite ends for establishing a flow throughthe jacket. These pipes may be provided with suitable hand-controlledvalves 10. At the right hand end of the furnace in Figi air and gasnozzlesY diagrammatieally illustrated at 1,1 supply a combustible gasand air under controllable pressure to the lower part of the combustionchamber', the iiame being projected through an orifice 12 in the -firebrick and thence substantially filling the combustion chamber up to theopposite open end 13, the overhanging fire brick (i serving in a measureto confine the flame and the heat and direct the latter 'toward theblanks as will hereinafter appear.

At one end of the furnace is a bracket 14 in which is rotatably mountedthe shaft 15 of a double sprocket wheel comprising the wheels 16 and 17.Atthe opposite end of the furnace are supported guide rollers 18 andsprocket wheels 19. lOver the sprocket wheels V16 and 17, the sprocketwheels 19, and the rollers 18, pass the sprocket chains 20 and 21, therebeing two parallel sprocketv chains passing around the several partsreferred to landdisposed side by side.V Intermediate the ends of theupper ply of these chains is a suitable supporting roll 22. To oppositelinks of the two chains are connected blank holders clearly illustratedin Figs. 3 and 4. Each blank holder comprises a cro-ss piece 23 screwedto blocks 24fcarried vby the links of the sprocket chains, the crosspiece having an elevated portion 25 inthe side of which is a recess 26for the reception of the blank to be heated. A spring 27 removablyfastened to the elevated portie-n 25 serves to yielilingly retain ablank in the recess 26. rhere is thus provided a blank carrier fortranslating the blanks over the combustion chamber of the furnace, theouter ends of the blanks coming in close contact with the flame inthecombustion chamber, the blanks being progressively heated as they iassfrom the right toward the left end as viewed in Fig. 1. A temperature of1600O F. is attained by the blanks during Vtheir passage through thefurnace.

Referring now more particularly to Figs. 2 and 3, the numeral 28indicates a rock arm pivotedl to a fixed frame at 29 and having a camsurface 30. To the outer end of the rock arm 28 is pivoted aconnectingrod 31, the opposite end of which is pivoted to an arm 32(Fig. 1) carrying a pawl which cooperates with a ratchet 33 fixed to thesprocketwheels 19, so that the rocking-of the arm 28 rotates thesprocket wheel 19 intermittently and thereby effects an intermittentmovement of thel blank holders to progressively advance the blanksrelatively to thel furnace into the path of a 'gripper to be hereinafterdescribed. hiovement of the rock arm 2S in one direction is effected bya spring 33', its movement in the opposite direction being positivelyeffected, as will appear.

The numerals 34 and 35 indicate the rolls which carry the swaging dies.The.die porthe roll opposite th'e wedge block 36 is recessed as at 3Sand a screw registers with the recess 38, has threaded connection withthe roll and a headed rotary connection with the wedge block 36 f asindicated vat 39,v so that rotation of thescrew will move the wedgeblock inone direction or the other for adjustment of the die. Afteradjustment the die is` pinned in place by screws 40. v

A pair of swaging dies, ployed, the rolls being of substantialy size androtatablyV mounted in heavy uprights or standards 41 which'may be boltedto a ,bed 42 upstanding frein the floor or ground. lhe rolls 34 and 35have'spur gears 43 and 44 fixed thereto and intermeshing, and to thelower roll 35 is fixed a large spurgear 45 in mesh with a smallerdriving pinion 46 (Fig. 2) on the main driving shaft 47, which lattercarries afly wheel 48 and may be driven from any suitable source ofpoweii. For transmitting motion to certain other partshereinafterdescribed the driving shaft 47 carries a bevel pinion 49 meshing with ahorizontally rotatable pinion V50 on the upper end of a` vertical shaft51, the vlatter carrying'at its lower end a bevelpinion 52 in turnmeshing with another bevel pinion 53 on a horizontal shaft 54. The shaft54 has a sprocket wheely 55 which drives a sprocket chain 56 and thischain in turn drives a larger sprocket wheel 57 mounted for rotation ona horizontal shaft 5S mounted in a bracket bearing 59. At one end theshaft v58 carries a spur gear 60. At theopposite end of shaft 58adjacent to the loosely rotatable sprocket wheel 57 is a clutch G1non-rotatably mounted `on the shaft but being slidable thereon to engagewith the Lvi i) clutch (il 'from the side ot the machine. The

clutch shifter train is indicated generally by the numeral 62, the handlever being indicated by the numeral 63.

The sivaging portions or instrumentalities et the horizontal rolls Eland 85 project outside the trame hill so as to be readily accessible tormanipulation of the dies and inspection ot' the Work. The die portiofnot er h sivaging roll includes an intaglio die, tlrzt on one rollcooperating-With that on the other as the rolls rotate to givepredetermined shape and dimensioni to the blank operated on and tocompress the blank niaterial to the configuration suitable for theimplement being formed, i. e., in thel present instance a knii'e blade.For advancing the heated blanks into operative relation with the swagingdies a reciprocatory gripper is utilized. The numeral 64 (Fig. 12)indicates horizontal guide rod supported in braclzets bolted to theoutside of the upstan-ding traine portions 41. This guide rod xtendstransversely of the path of movement of the blanks on the carrier andbetween the su'aging rolls and in the present embodiment is otcylindrical shape. The gripper is longitudinally reciprocable on theguide rod 6e toward and from the swaging rolls and consequently'reciprocates crosvrise oit the path ot the blank holders on the carrier.The gripper comprises a pair of @ripper jaws and 66 adapted to open ndclose, these jaws extending, respectively, in radial directions fromconcentric telescoiieally related sleeves 67 and 68, the inner sleeve 68being concentric Wit-hand rotatable on the guide rod 64; and the outersleeve 57 being rotatable on the inner sleeve.

(ln the sleeves 67 and (38 are lugs 69 and,

7 (l, the lug 7 0 projecting from a collar 71 V "uned to an extendedpclrtion of the inner f i as indicated at 72, the collar 7l beingrotatable `with the inner sleeve. The numeral 73 (Fig. le) indicates aspring ot bent metal which. passes partially around the guide rod Gel.,the ends ot this sleeve cooperating with the lugs 69 and 7 O so that tietension of the spring is exerted to rotate sleeves 67 and 68 in adirection to! close gripper aws.

arried by and rotatable with the sleeves (37 and 68 are jaw operatingdogs 7a.- and 75 extending in a generall f' radial direction from thesleeves, respectivel'p, and including or anti-'friction rollers. As thedogs r zzn-fi 75 are t' ed to the sleeves. the spring -1 only ziert-sits tension in a direction 'he gripper jaws but also to move il and 75with the sleeves. Alongside the oscillatory 'patlrot movement of thegripper is a device which cooperates with the dogs 7Lland 75 to open andclose the grippers at predetermined times. For each jaw operatingl dogthere is similar ogerating mechanism so that a description et theoperating mechanism for one vf Lll answer for both. rlhe numeral 7 6indicates an outer ti .ck and the numeral 77 an inner track. these twotracks forming a pair oit tracks spaced apart in a directiontransversely et the giiiderod G4. The outer track toward the inner trackas indicated at 78. l2, but 'between the tivo tracks at one endintervenes a switch 79 pivo'tcd at 80 and urged into switching positionby a spring Sl. At the end opposite the switch the inner track extendsbeyond the other as indicated at 82. The inner track 77 extemlsrectilineally be ond the switch toward the svfaging rolls a sufficientdistance to permit the grioper jaws to remain in gripping positionduring the operation of swagH ing and this distance is also sntlicientto permit retraction ol.I the gripper beyond the s'ivaging rolls Withoutopening the gripper jaws. As shown in Figs. l2, l2 and lli, the switch79 pivoted to swing into and out ot the slot which forms the track 77and is provided at its forward or svinging end with an inclined tace 79forming acontinuation of the inclined curve face 78 when the switch isseater. in the slot, the inclined Yface 79 thereof then lying adjacentthe tace of track 77 and forming a bridge between the and the curvedparts 78 oit tile track 7G. rIfhe inner surface ot the, sivit 7i),intermediate its swinging end and pivot` 80, is torined vsith aninclined cam 79:

It Will novi be seen that as the gri moves on its return or retractivestroke ir the sui'aging rolls, the jaiv operating dog;

and 75 will encounter the inclined iaces 7;; ot the switches 7 9 andthereby be deflected outwardly away troni each other over the curvedparts 78 of the tracks 7G. This ope eration separates the gripper jaws,thus releasing the blank held therebetween. The tracks '78 being spacedtroni the tracks 77 Wil rotate the jaw op-r ...ing dogs and inconsequence also the gi pper jaws. tlus releasing the blanr held be 4.

Ultimately the jan* operl ii dogs will es in the corresponi'ling rearends ot tracks and be thri by the spring7A ist the extendeil `por .onsot the inner tracks. the extended portions oi the inner tracks thegripper jaws will be closed open the blankV that the carrier has brought,to position in the sphere oi operation ot the gripper jaars. In orderto avoid vany chance ot over-running as Well as possible shock, a springbutler 83 is employed to cushion the retraetive move-- 'the path of thedogs to the dot and dash y lines shown in Fig. 12a and permitting freepassage thereof. After passage of the dogs the switches Will be urgedinto switching position by the springs 81. Thegripper jaws and 66 are atone end of the gripper and when in gripping relation adjacent thesivaging rolls lie in planes generally parallel to the axis of saidrolls.

rEhe numeral (Figs. 8 and 9) indicates a substantial bracket having abearing 86 on which is rotatably ymounted a spin' gear 87 in the side ofwhich is a recess 88 in which may be seated a link 89 pivoted to the at90. The bearing 86 is stationary and has a recess Which, as the gear 87rotates, is

adapted to register with the recess in thel so as to permit the link 89to move into the recess in the bearing. The-recess in the bearing may beprovided by cutting away a circumferential portion of the bearing to asuitable depth to accommodate, the desired amplitude of movement of thelink 89 and provision is made for positively moving the `link 89 out ofthe recess in the bearing-into the recessl in the gear by giving aproper shape to the inner vvall of the bearing recess. As indicated at91 in Figs. 8 and 9 said inner Wall provides a stationary cam which,

when the gear 87 rotates in the direction in'- dicated bythe arrow,causes the link 89 to n' move in a direction to seat it in the recess.in the gear.

Asshown in Figs. 1, 8 and 9, a rock arm 92 ispivoted at its lower end-to the frame at`98 andy at its upper end pivot-ed to a detachablebearing block 91k in which the outer sleeve of the gripper isrotatablymounted. 1n order to oscillate the rock arm 92 so as to effect theadvancing and retracting move ments of the gripper, the driver, or gear,S7 is operatively connected to the rock arm 92 through theinstrumentality of the link 89. rThe numeral 95 indicates a longitudinalslot in the arm 92. Longitudinally slide ble in Vthis slot is a crosshead or block 96 to Which the free end of the link 89, hereinhefore'referred to, is pivoted, as indicated at 97. Thus the driving gear 87is loosely articulated with the bearing 9a of the gripper through thepin and slot connection between the rock arm andthe driving gear 87.Further, inasmuch as in the present embodiment `the gripper movesrectilineally and the rock arm `moves in a circularpath, the rock arm 92is made extensible and contraen ti'ble by providing the upper portion100, which is immediat-ely connected to the bearing block 94, Wit-h asleeve slidably tele- Lsvaveo scoping with a reduced part 101 of the Vlower portion.

In making a blade according to the method herein referred to a piece ofsteel stock vof cylindrical cross-section may be used (F ig. 16). Thestock should be of sufficient length and thickness to be fashioned intoa blade having the desired dimensions as to length, breadth andthickness, as Well as into a handle or tang integral with the.

the edges of the handle and blade portions.

rhe major blade portion of the blank indicated by the numeral 118l 17)is, in one ope 1ation, sivaged into substantially the shape anddimensions of the blade desired, this operation being performed.betweenthe sivaging rolls 9staiid 35 hereinbefore described. Preliminary to therolling sivaging operation, thatpart of the stock which is to form themaj or portion of the blade is heated tothe proper temperature, atemperature of 1600O F. beinga practical temperature for the purpose. Inthe machine hereinbefore referred to thisheating is accomplishedprogressively as the blanks move past the com- Any fins bustion chamberof the furnace. or flashes of the metal remaining after the sWagingoperationby the rolls may be removed by a trimming operation'ivhile theblank iscold. Also in this trimming' operas tion more exact dimensionsas to length and breadth may be obtained. The article re- -sultant fromthe drop-forging, sivaeing and trimming operations will be a knife bladeprovided With an integral tang or handle. ln Figs. 17 and 18 the tang isillustrated iii dotted lines at 114.

lt will be understood that the machine. hereinbefore referred to isutilized, after the drop-forging operation, to heat the dropforgedblanks and supply and remove them from the sivaging rolls. ln operation,blanks from the drop-forging operation are inserted in the blank holdersof the carrier between 'the spring 27 and the elevated portion of thecross piece 25, the handle or tang of the blank lying in the recess 26Vwhich should be properly shaped to receive one or the other part. Thechoil of the blank indicated by the numeral 111 (F ig. 17) will bebeyond the end of the blank holder. As the blanks pass over the furnacethey are heated to the proper tempera-ture and ultimately arrive one byone into the sphere of operations of the reciprocatory gripper'. Whenthe operating dogs Til and 75 reach the switches 79 on the rctractivestroke ot the gripper jaws they will open l'or the purpose of releasinga previously gripped blank and they continue open to the end of theretractive path of the gripper, whereupon the operating dogs escape theends of the outer tracks 76, thel spring 78 causing the gripper jaws toclose. At this time these jaws will Vbe upon opposite sides of theforemost blank held by the carrier and Will grasp such blank, the handleor tang being received in recesses in the proximate. 'faces of thegripper ljaws and 6G, so that the blank Will be snugly gripped andresist endWise motion relative to the gripper in either direction.Thereupon the gripper makes an advance stroke, the dogs 74, 75 forcingthe switches ont of their path as above described, and the blank in thegripper is presented into cooperative relation with the. swaging rolls.in the present embodiment the main portions of the svvaging rolls arespaced apart sut ticiently to permit the flat gripper to entertherebetween, the die portions of these oils being at an increasedradial distance as vfill appear from an examination ot' Fig. Q

oi the drawings. Thus the gripper advancesthe blank into positionbetween the rolls and to such a distance that, as the rolls rotateJVVheA 'foremost portions of vthe dies contact .vith the blade portionofA the blank adjacent the heel or choil lll of the partially fashionedblank. The rotation of the swaging rolls is in the direction indicatedby the arrows in Fig. 2, so that, as they operate on the blank, they atthe sameI time move it therewith on its retractive stroke, i. e., to thelett in Fig. 2. The lspeed ot' retraction or", the blank gripped betweenthe Siva-ging dies is greater than the retractive speed of the gripperotherwise normally caused by the driving mechanism only. Hence, on itsreti-active stroke, the gripper, for a` portion of its path, moves at adiil'erent rate of speed from that normally caused by the drivingmechanism therefor. It will be perceived, however, that the vconnectionbetween the rock arm 92 andthe gear o7, including the link 89, movabletransversely of the axis of the `gear, and the block 96 sliding in theslot 9:3, provides a lost motion device, or connection, permitting aretractive movement of the gripper at ay ygreater rate of speed than thenormal rate of retraction due 'to the gripper driving mechanism alone.In this Way provision is made for retractive movement of the gripperunder the influence of the swaging dies Without interrupting themovement ot' the normal driving mechanism. During the retractivemovement of the grip.-

the link 89 moves into the recess in the bearing 86`and also istranslated in a. rotary path by reason ot' its pivotal connection to thegear asv indicated at 90. This translatory movement of the link with thegea-r 87 causes it to Wipe along the stationary cam 91 so that before acomplete rotation of the gear has been effected the link 89 will havebeen returned to the recess in the gear and thereby the speed ofmovement oi the gripper Will be restored to the normal speed resultantfrom the train of connections from the gear 87. It Will thus be seenthat the link 8S) With the connections described provides a lock for thelost motion device which is controlled bythe engagement ont the cam 91With the curved face of the link as the latter advances with the gear 87to lock the lost motion device against lost motion movement, the lockbeing released When'the link again reaches the position to fall into therecess in the bearing 86, shown in Fig. 9. The' gripper retains its gripon the blank daring the swaging operation and during the retractivemovement effected by the sii/aging rolls, 'the spring 73, (Fig. la)keeping the grippe-r aivs closed and being movable with the gripper. l f

It will be observed that, during oscillation ot the arm 92, the lugthereon, shoivn in Fig. 8, Will'engage With the inclined cam face 30 toeiiect corresponding oscillation oic the rock arm 28, thus imparting astep by step n'ioyement to the carrier-for the supply ot blanks throughthe. link 3l and the ratchet 32, 3S as shown in l.

Thus by the above described instrumentalities are accomplished amongothers the objects hereinbefore referred to.

Since. certain changes may be made in the above construction anddifferent embodiments ot the invention could be made Witlr out departingfrom the scope thereof, it

'intended that all matter contained in the labove description or` shownin the aecompa-nying dra-W ig shall be interpreted as illustrative 4andnot in a limiting sense.

It is also to be understood that the language used inthe followingclaims is intended to cover all ot 'the generic and speelt-ic 'featuresoit the invention herein described and all statements ot the scope ofthe invention, which, as a matter of language, might be said to falltherebetween.

Having described my invention, what I claimas new and desire to secureby Letters Patent is l. In an' apparatus of the character described, ,incombination. a pair of swaging dies, a gripper adapted to advance blanksinto operative relation With said dies, a. blank carrier adapted toadvance blanks into the sphere of operati-011 of said gripper', and afurnace adapted to heat the blanks on said carrier,

Q. In an apparatus of the character de* scribed, in combination, a pairof swaging rolls, a gripper' adapted to advance blanks into operativerelation with said rolls, a blank carrier adapted to advance blanks intothe sphere ot'voperatioii of said gripper, and a furnace adapted to heatthe blanks on said cari-ier.V f

3. In an apparatus of the character de-r scribed, in combination, a pairof swaging dies, a @ripper adapted to advance blanks into operativerelation with said dies, an intermittently movable blank carrier adaptedto advance blanks into' the sphere of op-A erationot said gripper, and afurnace adapt-v ed to heat the blanks on said carrier.

5. In an apparatus of the cliaracter'decribed, in combination, a pair otsvfaging dies, a gripper' adapted to advance blanks into operativerelation With said dies, a blank carrier adapted to advance yblanks intothe sphere of operation of said gripper, and a furnace adapted to lieatthe blanks on said carrier, said furnace and carrier being so' disposedrelative to eachr otliergthat the blanks are progressively heated asthey advance toward said gripper. s

(i. In an apparatus of the character descril'zed, in combination, a pairof sWaging rolls, a gripper adapted to advance blanks into operativerelation With said rolls, a blank carrier adapted lto advance blanksinto the sphere ot operation of said gripper, a furnace adapted to heatthe blanks on said carrier, and mechanism adaptedV to advance andretract said gripper including a lost motion connection permittingr aretraotive movement ot saidl gripper at a greater rate of speed than thenormal rate koi: retraction due to saidadvancing and retractingmechanism.

'2'. In an apparatus ot the character described, in combination, a pairof svvaging dies, a griiipcradapted to advance blanks into operativerelation-With 'said dies, an inten mi ttently movable blank carrieradapted to advance blanks into the sphere of operation of said pper, afurnace adapted to'lieat the blanks on said carrier, and mechanismadaptedto advance and` retract said gripper including a lost motionconnection. perin`itting a retractive moveinentfot said griprsr yat agreater rate of speed than tlienormal rate of retraction due to saidadvancing and retracting mechanism. Y 8. In an apparatus oi thecharacter described, in combination, a. pair of swagingr` dies, agripper `adaptedto advance blanksv into operative relation with saiddies, an intermittently movable blank carrier adapted to advance blanksinto the sphere orn operation of said gripper, a furnace adapted to heatthe blanks on said carrier, and meclianism adapted to advance andretract Vsaid gripper including a lost motion connection permiting aretractive movement of said gripper at a greater rate of speed than thenormal rate ot retraction due to said advancing and retractingmechanism, said furnace and cairier being sodisposed relative to eac-liVother that the blanks are progressively heated as they advance towardsaid, gripper.

9. In an apparatus ot the character de scribed, in combination, apa-irot sivaging rolls, a gripper adapted to advance blanks into operativerelation with said rolls, an interinittently movable' blank carrieradapted to advance blanks intotlie sphere ot operation of said gripper,a Jfurnace adapted to heat the blanks on said carrier, and ineclianismadapted to advance and-retract'said gripper including a lost motionconnection sov permitting a retractive movement oi'- said 1 gripper at agreater rate ot speed than t-lie` said advanc` normal rate ofret-ractiondue to ing and retracting mechanism.v v

10. In an apparatus of the character described, in combination, a pairofsivaging rolls, a gripper adapted to advance blanks into operativerelation With said rolls, an intermittently movable blank carrieradapted lto advance blanks into the sphere of operition of said gripper,aV furnace adapted to lieat theblanks on said carrier, and mechanismadapted to advance `and retract said andvoperative connections betweensaid gripl per vand said driver to ettect positive advancement andretraction of said gripper, said connections including a device forreleasing said gripper `tor a portion of its movement to movementindependent ot that caused by'said operative Vconnections and for`subsequently restoring said device so as to eii'ect positiveAadvancement by Said operative connections. Y l

12In anr apparatus of. the. character described, combina'tionp7 aglippen a i^ ;t atat ble driver, and operative connections be,- tWeensaid gripper and said driver to effect positive advancement andretraction of said fripper. said con cctions including a devicepermitting a period of movement ot' said gripper at a rate of speeddifferent from that otherwise normally caused by said driver.

13. ln an apparatus of the character described, in combination, agripper', a d iver,

operative connections between said gripper and said driver to effect'positive advancement and retraction of said gripper, saidlfonnections.including a device permitting period of movement oli' saidgripper at a rate of speed different from that otherwise normally causedby saiddriver, and means adapted to restore the speed ot movement otsaid gripper to normal.

lai.. In an apparatus of the character described, in combination, agripper, a. driver, operative connections between said gripper and saiddriver to effect positive advancement and retraction oit said gripper,said connections including a device permitting a period of movement ofsaid gripper at a rate of speed different from that otherwise normallycaused by said driver, and means adapted to co-operate to move saidgripper' at a rate ot' speed different from that caused by said driver.

l5. In an apparatus of the character described, in combination, agripper, a rotataxile driver, and operative connections between saidgripper and said driver to effect oscillation orn said gripper, saidconnections including a link pivoted to said driver for oscillationtransversely of the aXis ot rotafion thereof.

16. In an apparatus ot' the character described, in con'ibination, a.gripper, a rotatable driver, operative connections betiveen said gripperand said driver to effect oscillation of said gripper, said connectionsincluding a link pivoted to said driver for oscillation transversely of.the axis oit rotation thereof, and a stationary cam for moving said linkin one direction,

l?. ln an apparatus of the character described` in combination, agripper, a rock arm adapted to oscillate said gripper, a ro tatabledriver, and operative connections between said driver and said armincludingy a link pivoted to said driver for movement relative theretotransversely ot the axis thereof.

18. In an apparatus of the character described, in combination, agripper, a rock arm adapted to oscillate said gripper, a ro tatabledriver, and operative connections between said drive-r and said armincluding a link pivoted to said driver for-movement relative theretotransversely of the axis kthereof, said link having sliding connection,ivtl1"'sacl rocha-rin,

19, 1n an apparatus of the character described, in combination, agripper, a rock arm adapted to oscillate said gripper, a rotatabledriver, operative connections between said driver and said arm includinga link pivoted to said driver for movement relative thereto transverselyof the axis thereof, and a cam adapted to co-operate with said link tomove the same in one direction on its pivotal axis.

20. In an apparatus of the character described, in combination, agripper, a rock arm adapted to oscillate said gripper, a rotatabledriver, and operative connections between said driver and said arm,including a link pivoted to said driver for movement relative theretotransversely ot' the axis thereof, said link having sliding connectionwith said rock arm, and a stationary cam adapted to co-operate with saidlink to move the same in one direction on its pivotal axis.

2l. In an apparatus ot the character described, in combination, agripper, a rock arm for oscillating said gripper, a stationary bearing,a gear rotatable on said bearing, and a link pivoted at the side of saidgear and operatively connected to said arm.

22. In an apparatus of the character described, n combination, aVgripper, a rock arm for oscillating said gripper, stationary bearing, agear rotatable on said bearingl having a recess in its side, a.linkvseated in said recess pivote-d to said gear for movenienttransversely of the axis ot said gear and operatively connected to saidarm, said bearing having a recess adapted to regis with the recess insaid gear and a cam adapted to co-operate With said link.

23. in an apparatus of the character described, in combination, anoscillatable gripper, a rod by which said gripper is guided, anevtensible and contractible rock arm pivot v connected to said grippertor oscillating the same, a stationary bearing having a recess in itssurface, a gear rotatable on said bearing having a recess adapted toregister with the recessin .said bearing, and a link sli lably connectedto arni and pivoted to said gear for movement transversely ot the a1-isof said gear into and out of the recess in said bearing.

2li. In an apparatus of the character described, in combination, anoscillatffible gripper, a rod by Which saidgripper is guided, anextensible and contraccible rock arm pivotally connected to said grippertor fllating the same, a stationary bearing having` a recess in itssurface, a gear rotatY- able on said bearing having a recess adapted toregister with the` recess in said bearing. and link-slidably connectedto said arin and pivoted to said gear for movement t`4 y rs'elyof theaxis oi saidY into and out of the recess in said bearing, the innerccribed, in combination, an oscillatable gripper, a rod by which saidgripper is guided, an extensible and contractible rock arm pivotallyconnected to said gripper for oscillatingV the same, a stationarybearing having a recess in its surface, a gear rotatable on said bearinghaving a recess adapted to register with the recess in said bearing,

and a link having pin and` slot connection with said'arm and pivoted tosaid gear for movement transversely of the axis of said gear into andout ot the recess in said bearing, the inner wall ot the recess in saidbearing providing a cam co-operative to move said link into the recessin said gear.

2G. ln an apparatus of the character described, in combination, anoscillatory gripper including a pair ol jaws-adapted to open and close,means adapted to open and close said jaws at predeterminedpoints in thestroke or' the gripper including a dog on one of' said jaws, a pair ottransversely spaced tracks alongside the oscillatoryv path oi saitgripperon which said dog is adapted to run, and means adapted to switchsaid log from one track to the other as the gripper oscillates.`

27. In an apparatus of the character described, in combination, anoscillatory gripper vincluding 'a pair of jaws adapted to open andclose, means adaptedv to open and close said jawsat predetermined pointsin the. storke ot the gripper including a dog on one of said jaws, apair of transversely spaced tracks alongside the oscillatory path ofsaid gripper on which said dog is adapted to run, means adapted toswitch said dog from one track to the `other as the gripper oscillators,including a switch in the path of movement of the dog on one track, anda spring adapted to urge said switch into switching position.

28. ln an apparatus of the character described.; in combination, anoscillatory gripper including a lpair oit aws adapted to open and close,means adapted to open and close said jaws at Lpredetermined points inthe stroke of the gripper, including a dog on one et said jaws, a pairof transversely spaced tracks alongside the oscillatory path oit saidgripper on which said dog. is adapted to run, means adapted to switchsaid dog from one track to the other as the gripper oscillates, icluding a switch in the path of movement of the dog on Yone track, and aspring adapted to urge said switch into switching position, one of saidtracks extending beyond the other at the end opposite' said switch.

29. In an apparatus of the character described, in combination, a guiderod, a gripper including a gripper jaw sleeve @Oneentric with andVoscillatable on said rod, a second gripper jaw sleeve concentric withthe first, and means adapted to rotate one of said sleeves relative tothe other to open and close the gripper jaws, including a pair of tracksalongside the oscillatory path of said gripper spaced Vaparttransversely ofsaid guide rod, a dog on one of said sleeves adapted torun on said tracks, a spring tending to rotate said rotatable sleeve ina direction to close said gripper and to urge said dog against saidtracks, a switch in the path of the degl on one track, and a springadapted to urge said switch into Vswitching position. i I Y 30. In anapparatus of the character described, in combination, a gripperincluding a pair of concentric relatively rotatable.

operating dog extending in a radial direc tion therefrom, and a springadapted to urge said sleeves relative to each other in a di;

rection to `close said jaws. Y. In an apparatus of the characterdescribed, in combination, a gripper includ" ing a pair of concentricrelatively rotatable-sleeves each having agripper jaw ei;- tending in aradial direction therefrom, the inner sleeve extending beyond the outersleeve at one end of the gripper, a collar onthe extended portion oi androtatable with said inner sleeve, and jaw operating dogs, one on saidcollar and another on said outer, sleeve.

34. ln an apparatus of `the character described in combination, aygripper including a pair of concentric relatively rotatable sleeveseach. having a gripper jaw extending in a radial direction therefrom,the inner sleeve extending beyond the outer sleeve at one end ot' thegripper, a collar on the extended portion ot and rotatable with saidinner sleeve, and jaw operating dogs, one on said collar and another onsaid outer sleeve, said collar and said outer sleeve having lugs, and aspring co-'operating with said lugs to urge said sleeves rotativelyrelative to each other in a direction to close the gripper' jaws. y

In an apparatus et the character described, in combination, a gripperincluding a pair of concentric relatively rotatabley sleeves each havinga gripper jaw and a jaw operating dog extendlngin a radial directiontherefrom, a spring adapted to urge Said sleeves vrelative`t`o"eacl'i"other in a` direction to close said j'ayvsfanda bearing inwhich said outer sleeve is iotatively mounted.

p. InI ainappaiatus ot'y the 'character 'cle'- scribed, in combination,a gripper includinga pair of concentric relatively"rotatable sleevescach having a gripper aiv extending in aiijad'ial direction therefrom,the inner sleeve'extendingbeyond the outer sleeve at one end oit' thegripper, a collar on the ext-eiided portion oi' and rotatable yvith saidinner sleeve, j aw operating dogs, tone on 'said cbllarand another onsaid outer sleeve, said collar and said outer sleeve having lugs, aspring co-operating with said lugsV to Vurge said' Asleeves rotativelyrelative to eachother iii a direction to close tliegi'ippeijaivs, and adetachable bearing in which said outer Sleeve is rot-atively mounted.

37. vIn an apparatus of the character described, in' combination, a'blank' carrier, and means adapted to intermittently Aoperatesaidrarijier iiicl'uding'arock arm having a cam surface, a' second rockarm having a follower adapted; to' co-operate with said surface Atofactuate the vfirst mentioned rock arm,"a`rotatable driver, and 'a linkconnecting" said second rock arm to said "dritter to actuateV said'secondl rock arm.A

an apparatus of the character described', in combinationy a VblankVcarrier, means adapted to intermittently operate said carrier includinga: rock larm having a cam surface, a second rock arm having a 'followeradapted to co-operate with said surface to actuate the first vmentionedrock arm, a rotatable driver, a link connecting said second rock arm tosaid driver to actuate said second rock arm, a ratchet operativelyconnected to said blank carricnand a pavvl cooperative With saidratchet'and actuated from said first mentioned rock arm.

i 39'. lIn an apparatus ot the character described', in combination, ablank: carrier, means adapted to intermittently operate saidcarrier'including a rock arm having a cam surface, a second rock armhaving a follower adapted to co-operate with said surface to' actuatethe first mentioned rock arm, a rotatable driver, a link connecting saidsecondI rock arm to said driver to actuate said second rock arm,aratchet operatively connected to said blank carrier, a paWl co-operativewith said ratchet and actuated Ifrom said first mentioned rock' arm, anda spring tending to' oppose actuation of said iirst mentioned rock armby said second rock arm.

ett). In an apparatus'of the characterdescribed, in combination, anoscillatory gripper including a pair ot' concentric relatively rotatabletelescoping sleeves each having a gripper jaw, a radially extending jawoperating dogon one of said sleeves, means movable with the gripperadapted to urge one driver.

of said sleeves relative to the other in a direction to close said jawsand move'said dog, a pair of tracks alongside the oscillatory path ofsaid gripper in nfliiclisai'ddogi'is adapted to run, saidtracks beingspaced apart transversely of the oscillatory path'oi said gripper7 andinea-ns adapted tosivitch said dog from one track to the'otlie'r as thegripper oscillates.' 54,1; In rvan apparatus of the characterdescribedjin combination, an oscillatory gripper including a' pair ofconcentricrelatively rotatable telescoping sleeves. each. having agripper jaiv/,a jaw operatingtlog,ine'aiis movable with thegripper'adapted' to'eiiect relative rotation` saidslceves in a directionto close said jaws androtlat@t said dogs, a'bearing iii which' theonterlsleeve is rota'- tiif'ely mounted, aI rocklarn'ilooselyarticulated With said bearing, and means adapted to rocksaid' arm to effect oscillation of said .-:l. ik 5 er x gripper.

- 42. In an apparatus of the character described, in combination, anoscillatory gripper including a pairof concentricrelatively rotatablelte'lescopingsleeves each lniving a gripper a jaivA operating dog',means movable with the gripper adaptedto etl'ect relative rotatioiiotsaid; sleeves in a direction to close said jawvs'androtate saidldoga abearing in which the outerlsl'eeve is rota? tively mounted, arock 'ar'mlooselyarticulate'dwvith" said'be'aring, and means adapted torock said'arm to effect oscillation et said gripper including a rotary driver andl"a l'ink operatively.connected to said'rock arm and pivote'd 'to' zsaiddriver fornnovement.

transversely of the axis of rotation of said .'l i, if. ilf. i J

In an apparatus of the character described, in combination, a sWagingdevice including a rotary'"srvaging member having rolling' swaging'engagementlyvith ajblank, ablank carrier4 including a gripper forVadvancing a blank tol said'swaging"device and retaining griptheijeonduring a rolling.swag.J ingl action upon the blank automaticmeans to'opeiate said gripper 'td a blank'i'rom a supply sourceand toreleasegrip thereon after the swaging operationfand'y means forpermitting movement" otsaid blank and gripper by said rolling actionwhen the blankis` gripped by said gripper. 1'

4A. In `an apparatus ofthe character described, in combination, aksivaging" device including 'a rotary swaging member having ,rollingsivaging engagement With a. blank, a blank carrier includingia. gripperfor 'advancing a blank' to said 'swagi'ng device yand retaining grip'thereon' during' aH rolling stva'ging action upon' the blank, automaticYmeans tol operate said ygripper to grip a blank` from afsupply 'source'and'to'release grip'lthereon a'fter the swaging operation, positiveoperating 'connection v,ior i' rhin..

moving iii said blank carrier toward and aivay from said sivaging deviceand means for permitting movement of said-blank and gripper by saidrolling action When the blank is gripped by said gripper. l 45. In anapparatus of the character described, in combination, a pair of sivagingrolls, a gripper adapted to advance a blank to saidrolls and retain gripthereon during swaging of thel blank, said rolls co-operating, as theblank is sivaged, to retract said blank and the gripper in Which itisheld, and operating connections having positive connection with saidgripper to advance and retract the same relative to said rolls.

k46. In an apparatus of the character described, in combination, a pairoi snfaging rolls, a gripper adapted to advance a blank to said rollsand retain grip thereon during sivag'ing of the blank, said rollsco-operating, afs-the blank is sivaged, to retract said blank and thegripper in which it is held, and means connected to said gripper toadvance and retract the same relative to said rolls, including va iostmotion connection adapted to permit the reti'active movement oi saidblank and gripper under the influence of said rolls at a greater rate ofspeed than the normal rate of retraction due to said advancing andretraeting means. a a l,

47. In anapparatus of the character-described, in combination, a pairvofsivaging rolls, anda gripper adapted toV advance a blank intosvvaging co-operation Awith said rolls and ret-ain grip-onthe blankduring swaging, said gripper including at one end i VVa pair ctv-flatjaws adaptedV to lie in planes generally -parallel to` the axes of saidrolls when in gripping relation adjacent said rolls. i I

48. In an apparatus of the character described, in combination, a pairof sivaging rolls, and a gripper adapted to. advance a blank intosWaging (3o-operation with said rolls and retain grip on the blankduring swaging, said gripper including` a pair of concentric relativelyVrotatable sleeves each having a fiat gripper jaw` extending' in avradial direction from one end.

49. In an apparatus of the character described, y'in combination, aframe, a pair of horizontal rolls journaled in and projecting outsidesaid frame and having sWaging. instrumentalities on the projectingportions, a horizontal guide rod Aextending between said rolls outsidesaid frame, a blank gripper longitudinally reciprocal on said frod to-Ward and from said rolls, including concentric telescoping gripper jawsleeves rotatable relative to saidrrod, va rock arm adapted toreciprocate said gripper, and tracks alongsidethe` path of movement ofsaid'V gripper adaptedto co-operateivith the gripper jaw sleeves to openand close the'jaivs as the 'f gripper reciprocates.

50. In an apparatus of the character described, in combination, a blankcarrierintermittently movable in an endless path including a pluralityof blank holders having e 51. In an apparatus .of thecharacterde fscribed, in combination, means to move a,

blank along a selected path, meansy to progressively heat the blankWhile itis traveling over the path, means to'sivage the blank, and meansto receive the blank from the moving means and presentit to the swagingmeans.

52. In an apparatus of the character described, in combination, means toAmove a blank along a selected path, means to progressively heat theblank While it is traveling over the path, means to sivage the blank,and means to receive the blank from the moving means and present it tothe sivaging means, including a reciprocating gripper controlled toclosed position asit movesirom the moving means to the sivaging meansand to open position as it moves in the opposite direction. 1

' 58. In an appara-tus of thecharacter dehold the gripper closed Whileit is travelingV toward the swaging means, and means to release thegripper as it moves in the opposite direction.

54. In an apparatus ofthe character described, in combination, a heatingmeans foi blanks, a sivaging device, a supply carrier to jii'ogressively move a supply of blanks .through said heating means tolheat the blanks, blank carrier for carrying the blanks betiveen'sa'idfirst mentioned carrier and said sivaging devi-ce and having a grippermovable bodily toward and kaway trom said sii/aging device, and meansfor controlling said gripper to-giip a heated blank and carry it intothe sphere or operation ot said sivaging device and to hold it during asWaging operation thereon. Y i

55. In an apparatus of the character described in combination, means tosvvagea blank, means to progressively heat the blank, and means toremove the blank from the heating means andV present it to the sivagingmeans, including a gripper controlled to grip'the blank While moving in'MHT ieu

one direction, and to release the blank while moving in the oppositedirection.

In an apparatus of the character described` in combination, arecipi'ocable blank holder, operative connections tor etfectingrcciprocation ot said liolder, a lost motion device in said operativeconnections, and means tor locking said lost motion device.

57. In an apparatus et the character de scribed, in combination, areciprocable blank holder, operative connections tor eli'ectingreciprocation oit' said holder, a lost motion device in said operativeconnections, means ioi' locking said lost motion device, and meansautomatically operative at a predetermined point in the movement ot' f-lholder tor operating said locking means.

In an apparatus oit the character described, in combination, ai'cciprocable blank holder, operative connections ior effect-ingreciprocat-ion of said holder, a lost motion levicc in said operativeconnections, a lock for said lost motion device, and automatic operativemechanism tor said lock to place it in locking` position when the blankholder .is near one nterminal ot its ni vement and to place it inreleased position ai'ter the blank has been advanced.

59. In an apparatus of the character described, in combination, aswaging device, a blank carrier movable to carry blanks betvveen asupply source and said sivaging device, driving connections for saidblank carrier, a lost motion device for said driving connections, a lockfor said lost motion device, and means to release saidl lock to permitmovement of said carrier independently of said driving` connections.

GO. In an apparatus of the character described, in combination, asWaging device,v

a blank carrier movable to carry blanks between a supply source and saidswaging device, driving connections for said blank carrier, a lostmotion device for said driving connections, a lock for said lost motiondevice, ineans to release said lock te permit movement ot said carrierindependently oia said driving connections, and means controlled by tlie.operation ot said carrier to advance blanks into position to bereceived by the carrier.

(51. In an apparatus of the character described, in combination, asivaging device, a blank carrier movable to carry blanks between asupply source and said swaging device and having a gripper to liold ablank during a swaging operation thereon, driving connections for saidblank carrier, meansto release said gripper vvhen the carrier has passedbeyond the sphere of operation of said sivaging device, and meanscontrolled by the operation oit said carrier to advance blanks intoposition to be received by the carrier.

(52. In an apparatus of the character described, in combination, asivaging device, a blank carrier movable to carry blanks betvvcen asupply source and said sivaging device, a blank gripper on said carrier,and means to control said gripper to grip a blank at said supply sourceand to release it after it has been advanced to said sWaging device.

G8. In an apparatus ot the character described, in combination, asu'aging device, a bla-nk carrier movable to carry blanks betrveen asupply source and said sivaging device, a blank gripper on said carrier,means tocOntrol said gripper to giip a blank at said supply source andto release it after it has been advanced to said sWaging device,andineans controlled by said carrier operating means to advance blanksinto position to be received by said gripper.

(Sil. In an apparatus ot the character described, in combination, asivaging device, a blank carrier movable to carry blanks betiveen asupply source and said sWaging device, and driving connections for saidblank carrier including a pivoted link and a cam for moving said linkinto fixed position relative to its pivot.

In anl apparatus ot' the character described, in combination, a sivagingdevice, a bla-nk carrier movable to carry blanks betiveen a. supplysource and said sivaging device, and driving connections for said blankcarrier including a rotary driving member, a link pivoted to said rotarydriving member and a cam for moving said link into iXed positionrelative to said rotary driving ineinber.

66. In an apparatus ofthe character described, in combination, a heatingmeans for blanks, a sivaging device, a supply carrier to progressivelymove a supply of vblanks through said heating means to lieat the blanks,a blank carrier for carrying the blanks between said i'irst mentionedcarrier and said swaging device and having a gripper movable bodilytoward and away from said swaging device, means for controlling saidgripper to grip a 'heated blank and carry it in the sphere of operationof said swaging device and to hold it during a sivaging operationthereon, and means for releasing said gripper to release the blank afterit has been removed from said swaging device.

In testimony whereof I alix my signature.

EDIVARD E. WOOD.

